4X4 Amp Cabinet Switcher

A compact professional switching system for up to 4 amplifiers, 4 speaker cabinets, one power attenuator and your FX-Loops.

Designed for guitarists, home and professional studios, music stores and compact touring rigs, the N-audio 4X4 delivers fast and reliable amp switching with a relay-only signal path, advanced amplifier protection, a switchable power attenuator insert and MIDI control. Supporting tube, solid-state and bridged amplifiers, it lets you compare amplifiers instantly while keeping your equipment protected and your tone untouched.

Why Musicians Choose the 4X4

The 4X4 is designed for players and studios that need professional amp and cabinet switching without a large rack setup. Whether you're comparing amplifiers in the studio, demonstrating equipment in a guitar shop or building a compact live rig, every connection happens instantly with a single button or MIDI command. The 4X4 continuously protects connected amplifiers using dedicated hardware safety loads, intelligent relay logic and cabinet detection, allowing safe and seamless switching between amplifiers and speaker cabinets.

Integrated FX-Loop Control

The optional 4CH FX-Loop Extension automatically routes modulation and time-based effects connected to the send-return loop of the active amplifier. Instead of reconnecting your delay, reverb, chorus or other effects every time you switch amps, the FX-Loop Extension follows the selected amplifier automatically. The extension is powered directly from the MIDI output of the 4X4, requiring no additional power supply.

Built for Modern and Vintage Guitar Rigs

The 4X4 supports guitar and bass amplifiers, including tube, solid-state and bridged floating ground amplifiers, as well as guitar and bass combos. It is also compatible with virtually any active or passive power attenuator, including Two Notes Reload II, Fryette PS-2 / PS-100, Universal Audio OX, Boss WAZA TAE and TAE CORE.

Pure Tone Without Compromise

Every audio path inside the 4X4 uses high-quality relay switching. There are no active audio buffers, no audio processing and no tone coloration. A dedicated pop suppression circuit eliminates switching noises, allowing silent amp and cabinet switching without clicks or interruptions. Your guitar signal stays exactly as it should.

Designed to Protect Your Amplifiers

Tube amplifiers should never operate without a proper speaker load. For this reason, every amplifier connected to the 4X4 is continuously monitored and protected. Safety features include independent internal dummy loads, muted inactive amplifier inputs, a permanent safety load across the speaker bus, an intelligent switching sequence and cabinet detection.

Main Features

• Switch up to 4 amplifiers
• Connect up to 4 speaker cabinets
• Drive up to 3 cabinets simultaneously
• Optional MIDI-powered 4CH FX-Loop Extension
• Switchable master power attenuator insert
• Silent recording support
• Front and rear guitar inputs
• Passive tuner output
• Relay-only signal path
• Intelligent amplifier protection and cabinet detection
• Supports tube, solid-state and bridged amplifiers
• MIDI control with Windows and macOS software
• Optional 19" rack mounting brackets

Technical Specifications

• Dimensions: 300 × 45 × 130 mm
• Universal mains power supply: 90–260 VAC
• Maximum power consumption: 10 W
• Input impedance: 10 MΩ
• Lifetime Warranty
• Designed and built in Bulgaria